/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.engine.impl.pvm.runtime;

import org.activiti.engine.impl.pvm.process.ActivityImpl;
import org.activiti.engine.impl.pvm.process.ScopeImpl;

/**
 * @author Tom Baeyens
 */
public class AtomicOperationDeleteCascadeFireActivityEnd extends AbstractEventAtomicOperation {

    @Override
    protected ScopeImpl getScope(InterpretableExecution execution) {
        ActivityImpl activity = (ActivityImpl) execution.getActivity();

        if (activity != null) {
            return activity;
        } else {
            InterpretableExecution parent = (InterpretableExecution) execution.getParent();
            if (parent != null) {
                return getScope((InterpretableExecution) execution.getParent());
            }
            return execution.getProcessDefinition();
        }
    }

    @Override
    protected String getEventName() {
        return org.activiti.engine.impl.pvm.PvmEvent.EVENTNAME_END;
    }

    @Override
    protected void eventNotificationsCompleted(InterpretableExecution execution) {
        ActivityImpl activity = (ActivityImpl) execution.getActivity();
        if ((execution.isScope())
                && (activity != null)) {
            execution.setActivity(activity.getParentActivity());
            execution.performOperation(AtomicOperation.DELETE_CASCADE_FIRE_ACTIVITY_END);

        } else {
            if (execution.isScope()) {
                execution.destroy();
            }

            execution.remove();

            if (!execution.isDeleteRoot()) {
                InterpretableExecution parent = (InterpretableExecution) execution.getParent();
                if (parent != null) {
                    parent.performOperation(AtomicOperation.DELETE_CASCADE);
                }
            }
        }
    }
}
